EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 2,645	$ 2,146	$ 2,224
Net earnings numerator (diluted)	$ 2,645	$ 2,146	$ 2,224
Average number of common shares used in basic calculation	715.0	718.0	718.0
Net earnings (loss) attributable to The Kroger Co. per basic common share	$ 3.7	$ 2.99	$ 3.1
Dilutive effect of stock options (in shares)	5.0	7.0	9.0
Average number of common shares used in diluted calculation	720.0	725.0	727.0
Net earnings attributable to The Kroger Co. per diluted common share	$ 3.67	$ 2.96	$ 3.06
Undistributed and distributed earnings (loss) to participating securities	$ 20	$ 18	$ 20
Shares excluded from the earnings (loss) per share calculation due to anti-dilutive effect on earnings per share	2.9	2.8	1.7